2020 YAMAHA WR250F REVEALED

There's an all-new Yamaha WR250F for 2020: lighter, more powerful – and bang up to date...

words: Jon Bentman images: Yamaha

Thursday 5th September 2019

Yamaha has revealed details of their much-updated WR250F for 2020. There’s a lot of new in the brew as the 2020 model is development of the latest YZ-F motocrosser. So it’s a new chassis and engine, both much like before in general engineering terms, but in the detail there’s a lot of change. If it’s anything like the update that Yamaha made to their excellent 2019 WR450F (read about that in RUST #42 here) then we can expect considerable dynamic changes. So here’s a quick review of what’s coming:

ENGINE

New engine, based on the latest YZ-F, now with a higher compression ratio of 13.8:1, ‘optimised’ exhaust cam timing and new intake port valve seats to boost low-to-mid torque.